Mayfield Heights, OH has a population of 18,878 and is the 2,315th largest city in the United States. The population density is 4,528 per sq mi which is 1658% higher than the Ohio average and 4897% higher than the national average. The median age in Mayfield Heights is 43 which is approximately 10% higher than the Ohio average of 39. In Mayfield Heights, 53% of the population over 15 years of age are married, 81% speak English and 1% speak Spanish. 70% of Mayfield Heights residents were born in Ohio, 14% were born out of state, 1% were born outside of the United States and 16% were foreign born.